Here you can find the source of createInString(List
public static String createInString(List<String> keys)
//package com.java2s; /*//from w w w . jav a 2 s .c om * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * copyright (C) 2012 nambi sankaran. */ import java.util.Iterator; import java.util.List; public class Main { public static String createInString(List<String> keys) { StringBuilder sb = new StringBuilder(); if (keys != null && keys.size() > 0) { for (Iterator<String> iter = keys.iterator(); iter.hasNext();) { String key = iter.next(); sb.append("'"); sb.append(key); sb.append("'"); if (iter.hasNext()) { sb.append(", "); } } } return sb.toString(); } }